Improved drilling-machine for wells



UNITED STATES PATENT OFFICE.

GERSHOM MOTT, OF B1G RUN, OHIO.

Specification forming part of Letters Patent N0. 55,693, (lated June 19,1866.

To alt tti/0m it may concern:

Be it known that I, GERsHoM Mor'r, of Big Run, in the county ot' Athensand State of Ohio. have invented a new and useful Machine for DrillingWells', and I do hereby declare that the following is a full, clear, andexact description of the same, reference being had to the accompanyingdrawings, made part of this speciiication.

Figure lis a perspective view ot' the machine when arranged to work adrill. Fig. 2 is a section ot' the toe of the tripping-beam ot' a drill.

O is a framed platform, to which the machinery is attached. A A is agalloWs-frame erected upon the platform, consisting of two upright postswith the cross-head A fra-med on the upperend. Theposts A A have adovetailed groove to receive the tie I when the machine is operated witha drill. E is the tripping-beam, to which the drill is attached byordinary means to the ystud E. Holes mortised through the cross-head andtie serve as guides for the tripping-beam, which passes freely throughthem. Thetoe ofthe trippingbeam E is formed as shown in Fig. 3, restingupon its lower end upon the platform when down. and raised by the crankD, which has a rolling collar working on its crank-pin to avoidfriction. The crank D receives motion from a shaft driven by any kind ofpower.

lIn the case shown in the drawings the crank revolves from right toleft, or against the sun.

When the crank is in the lower arc ot' its revolution and passesthecenter, beginning to ascend, it strikes the point ot' the trippingbeamas it passes toward the right; it raises the beam so that when the crankis horizontal it has raised the beam nearly one-haltet' the diameter ot'the circle described b v the crank. When the crank passes the perpendicularit disengages the tripping-beam, which t'alls with its owngravity, and the drill falls with it freely. One stroke ofthe drill ismade to every revolution ot' the crank, which may be varied at will. Theupward slope of the lower face of the toe E has the eiect of diminishingthe upward movement ot' the tripping-beam and drill, thus giving agradually accelerating' motion, and lavoiding the shock which wouldendanger the machinery it' full action were at once communicated.

Having t'ully described thc character ot' my improvements, what I claimas lny invention, and seek to secure by Letters Patent, is-

The tripping-beam E, having its toe E,

vshaped as shown, in combination with the crank D, substantially as andi'or the purpose set forth.

In testimony whereofl have signed my name to this specification in thepresence ot'two subscribing witnesses.

GERSHOM MOTT.

Witnesses VIRGINIA G. LADD, W. W. W IcKHAM.

